US 12,214,690 B2
Electric meter
Andreas Lepper, Hohenahr (DE); and Michael Pollmann, Dillenburg (DE)
Assigned to ISABELLENHUETTE HEUSLER GMBH & CO. KG, Dillenburg (DE)
Appl. No. 17/285,655
Filed by Isabellenhuette Heusler GmbH & Co. KG, Dillenburg (DE)
PCT Filed Sep. 16, 2019, PCT No. PCT/EP2019/074671
§ 371(c)(1), (2) Date Apr. 15, 2021,
PCT Pub. No. WO2020/078633, PCT Pub. Date Apr. 23, 2020.
Claims priority of application No. 102018125598.5 (DE), filed on Oct. 16, 2018.
Prior Publication US 2021/0394638 A1, Dec. 23, 2021
Int. Cl. B60L 53/62 (2019.01); B60L 53/66 (2019.01); G01R 22/06 (2006.01); B60L 53/18 (2019.01)
CPC B60L 53/66 (2019.02) [B60L 53/62 (2019.02); G01R 22/061 (2013.01); B60L 53/18 (2019.02)] 14 Claims
OG exemplary drawing
 
1. Electric meter for electrical consumption measurement at an electrical load, comprising:
a) a current measuring device for measuring a charging current which flows via a charging cable to a transfer point for the load, the transfer point being located in a plug of the charging cable,
b) a voltage measuring device for voltage measurement,
c) a first current connection on the input side for receiving the charging current from a charging source,
d) a second current connection on the input side to return the charging current to the charging source,
e) a first current connection on the output side for conducting the charging current via the charging cable to the transfer point at the load,
f) a second current connection on the output side to return the charging current from the load via the charging cable, and
wherein the voltage measuring device is adapted to measure the voltage directly at the transfer point of the charging cable in order to determine line losses in the charging cable, the voltage measuring device has a first voltage measuring input for measuring a first voltage directly at the transfer point to the load with respect to a reference potential, the voltage measuring device has a second voltage measuring input for measuring a second voltage directly at the transfer point to the load with respect to the reference potential, and the voltage measuring device has a third voltage measuring input for measuring a third voltage at the input-side second current connection relative to the reference potential.